halladat



(N0 Modeli) 2 Sheets-Sheet 1. L. P. HALLADAY BICYCLE.

Patented Apr. 28, 1891.

{No Model.) 2 Sheets-Sheet 2.

L. P. HALLADAY. BICYCLE.

Patented Apr. 28, 1891 UNITED STAT S PATENT @rrrcn.

LElVIS P. HALLADAY, OF CHICAGO, ILLINOIS, ASSIGNOR OF lWVO-THIBDS TO .IVILLIAM H. I-IALLADAY AND IVILLIAM E. HALLADAY.

BICYCLE.

SPECIFICATION forming part of Letters Patent No. 451,428, dated April 28, 1891.

Application filed September 15, 1890. Serial No. 365,007- (No model.)

To all whom it may concern: tion sufiices for both. The rear boxes, how- Be it known that I, LEWIS P. HALLADAY, ever, are set at an angle to the vertical line, a citizen of the United States, residing at Chior so that they shall be placed tangentially cage, in the county of Cook and State of Illito a circle, the center of which is the center 5 1101s, have inventeda newand usefullmproveof rotation of the pedals. ment in Bicycles, of which the following is a IV is a sprocket-wheel on the rear axle; X, specification. the chain therefrom, which passes around the My invention relates to bicycles, and has sprocket-wheel Y, which is secured on the for its object to provide a simple and inexshort shaft Z, which is journaled in the box- IO pensive bicycle and frame, as illustrated in ing Z. To this shaft is also secured the pedthe accompanying drawings, whereinals Z Z Figure 1 1s a side view of the bicycle. Fig. Z is the seat supported in any usual man- 2 1s a View of one of the forward boxes with nor; Z, the handle, and Z" the brake. 6 5

side removed. Fig. 3 is a vertical section In the modification the interior of the rear I; through the opposite boxes on the line 3 3. boxes, as shown, has a groove concentric with F1g.4 1s a cross-section plan view on theline the center of rotation of the pedals, and the 4 4:. Fig. 5 is a detailed modification. block which holds the axle is adapted to slide Like parts are indicated by the same letter. therein, and the slots in the side of the side in all the figures. plates of the boxes are also arc-shaped. A A are the wheels, made in any desired Clearly changes in the positions and relamanner. tions of some of the parts could be made with- The frame is composed of the sections B, out departing from the spirit of my invention. C, D, E, F, G, and H. These sections consti- The use and operation of my invention are tute, when put together, one continuous as follows: It will be observed that the weight 5 frame, the section II being ad 3' ustably secured of the rider, together with the weight of the by the set-screw J, and the section E serving frame of the machine, is supported upon the as a sort of link connecting the sections B wheels by means of the intervening elastic and D. K K are the guards suitably secured springs T T, which are interposed between on these frame-pieces. the frame proper and the blocks in which the 3 L L are forward boxes on opposite sides of axles are secured. If now the machine pass the wheel A. These boxes are secured to the over obstructions or obstacles or inequalities frame-piece B by the arms M M on opposite in its track, the wheel which engages such obsides of the wheel. Each box is composed of structions will rise slightly against the elastic a rectangular ease with sides, which sides are spring T, and its motion, or the motion of such 35 removable. Depending from the top of the inequality, will be taken up by such spring, boxis the base N, and projecting upward from and hence will not be communicated in any the bottom of each box is the screw-bolt O, considerable degree to the body of the rider. having the nut P at its lower end. This is the action whether either or both of Vithin each box, and adapted to vertically the wheels are passing over obstructions.

4 reciprocate therein, is a block R, through Moreover, such motion of the wheels will not which passes the end of the axle S and upon affect the distance of the rider from the pedwhieh rests the spiral spring T, the upper end als or otherwise interfere with his operating of which receives the base N. Each side of the the machine. WVhen the rear wheel rises in 5 box has a slot U U, through which projects this manner, it will slightly vary its position 45 the axle S, and thus it will be seen that the with reference to the centerof rotation of the block R, which carries the end of the axle, is pedals, and hence would have a tendency to adjustably supported by the arms V V. The shorten the chain X, or rather to lengthen the arms V, F, and Gr are of course in duplicate distance between the two sprocket-wheels. I00 and the wheel placed between them in the If in the form of machine shown the boXLin 5o usual manner. The boxes for the rear wheel the rear wheel should be placed upright, this A are precisely the same as those for the foraction would materiallyinterfere with the opward wheel, and hence the foregoing deseriperation of the machine. By placing the box at an angle to the vertical line the motion of the axle of: the wheel as it rises and falls will be tangential to a circle from the center of the sprocket-wheel Y, and hence the variation of distance between the centers of the rear wheel A and the sprocket-wheel Y will be trifling. In any case this variation can be entirely obviated by making the blocks in which the rear axle is fixed move through an arc the center of which is the center of the sprocketwheel Y, as indicated in Fig. 5. Of course the angle of inclination of the rear blocks L L and the position and curvature of the are, if used, would vary according to the relative positions of the sprocket-wheels.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is as follows:

1. In a bicycle, the combination of an upperframe with boxes secured to the frontand rear thereof, blocks within such boxes capable of reciprocating therein, wheels whose axles are supported in such blocks, elastic cushions in said boxes above such blocks, and adjustable rigid supports for such blocks in the bottom of such boxes, said boxes entirely inclosing such springs.

2. In a bicycle, the combination of an upper frame with a driving wheel, drivingtreadles, driving-chain, and sprocket-Wheels connecting such Wheel-axle with the treadles, an elastic cushion interposed between such wheel-axle and the frame, and acurved guide in which such wheel-axle moves, the curvature thereof concentric with the center of rotation of the treadles.

LElVIS 1. IIALLADAY.

Witnesses:

lELESTE P. CHAPMAN, .Tniix ELLIOTT. 

